tính 197 + 550

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{197}\\{550}\end{array}} \\\,\,\,\,747\end{array}\)

\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{847}\\{\,\,23}\end{array}} \\\,\,\,824\end{array}\)

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{729}\\{\,\,\,56}\end{array}} \\\,\,\,\,785\end{array}\)

\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{156}\\{\,\,\,37}\end{array}} \\\,\,\,\,119\end{array}\)